FAST FLOW THERMOSTAT ELBOW JEEP
Fast Flow Thermostat Elbow
Enhanced coolant circulation
Thermostat housing (coolant elbow) with fast flow design for improved cooling. This elbow forms the connection between cylinder head and upper radiator hose, in which the thermostat is mounted. Fast flow version offers increased flow compared to standard design.
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Application Engine coolant elbow |
Type Fast flow thermostat elbow |
|
Function Thermostat housing upper engine |
Mounting Attachment to cylinder head |
Features
- Fast flow design for increased coolant circulation
- Thermostat housing with integrated coolant elbow
- Connection between cylinder head and radiator hose
- Optimised flow openings
- Suitable for 160° or 180° thermostat (thermostat not included)
★ Note: different versions exist for L-134 (flathead) and F-134 (F-head) engines. Check your engine type before ordering.
Installation notes
Fit with new gasket and thermostat retainer. Ensure the thermostat remains correctly positioned during assembly — always use the metal thermostat retainer to hold the thermostat in place against the cylinder head. Tighten mounting bolts evenly to specification.
Compatibility
CRITICAL: L-134 flathead engines (1941-1952) and F-134 F-head engines (1950-1971) use DIFFERENT thermostat housings. L-head: cylinder head is flat, mounting directly onto head. F-head: cylinder head is tall, different mounting angle. Check which engine you have before ordering.
Historical context
The fast flow design is a later performance improvement on the original WWII design, intended for better cooling under demanding conditions or for modified engines.
This description was generated automatically. Unsure about fitment? Contact us at info@willys.be.
⚠ Spotted an error in this description? Report it to info@willys.be
This part is intended for the restoration of historic military vehicles. Fitting, aligning, deburring or reworking is part of that work and is inherent to the nature of these goods. Dimensional variation also exists between original vehicles.
Installation requires technical knowledge of the vehicle. Unsure whether this part suits your version? Ask us before purchase at info@willys.be.
ALL_CATEGORIES : Upper Engine – Cylinder Head, Upper Engine CJ2A, UPPERENGINEHEAD CJ2A, Cooling Thermostat Elbow CJ2A, UPPERENGINEHEAD CJ3A, Cooling Thermostat Elbow CJ3A, Upper Engine M38, UPPERENGINEHEAD M38
This part fits:
| Model | Years |
|---|---|
| Military jeeps | |
| Willys MB (early) | 1941, 1942 |
| Willys MB | 1942, 1943, 1944, 1945 |
| Ford GPW (early) | 1942 |
| Ford GPW | 1942, 1943, 1944, 1945 |
| Hotchkiss M201 | 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966 |
| CJ series | |
| Jeep CJ-2A | 1945, 1946, 1947, 1948, 1949 |
| Jeep CJ-3A | 1949, 1950, 1951, 1952, 1953 |
📐 Diagrams & technical drawings
From the original Technical Manual CJ2A_PL_1949 — Parts List — only for Willys CJ-2A / CJ-3A (1949)
From the original Technical Manual TM 10-1513 — Maintenance Manual — only for Willys MB / Ford GPW (1942)
